Accessibility and system reduction of nonlinear time-delay control systemsBartosiewicz, Zbigniew; Kaldmäe, Arvo; Kawano, Yu; Kotta, Ülle; Pawluszewicz, Ewa; Simha, Ashutosh; Wyrwas, MałgorzataIEEE Transactions on Automatic Control2021 / p. 3781−3788 https://doi.org/10.1109/TAC.2020.3028566 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Algebraic formalism of differential one-forms for nonlinear control systems on time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Pawluszewicz, Ewa; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences. Physics. Mathematics2007 / 3, p. 264-282

Algebraic formalism of differential p-forms and vector fields for nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Pawluszewicz, Ewa; Tõnso, Maris; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2013 / p. 215-226

Equivalence of linear control systems on time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Pawluszewicz, EwaProceedings of the Estonian Academy of Sciences. Physics. Mathematics2006 / 1, p. 43-52

Feedback linearization of an active magnetic bearing system operated with a zero-bias fluxMystkowski, Arkadiusz; Kaparin, Vadim; Kotta, Ülle; Pawluszewicz, Ewa; Tõnso, MarisInternational journal of applied mathematics and computer science2017 / p. 539-548 : ill https://doi.org/10.1515/amcs-2017-0038

FLHex: a flapped-paddle hexapod for all-terrain amphibious locomotionBurzynski, Piotr; Simha, Ashutosh; Kotta, Ülle; Pawluszewicz, Ewa; Sastry, ShivakumarBulletin of the Polish Academy of Sciences Technical Sciences2021 / art. e139007, 9 p. : ill https://doi.org/10.24425/bpasts.2021.139007 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Forward and backward shifts of vector fields : towards the dual algebraic frameworkMullari, Tanel; Kotta, Ülle; Bartosiewicz, Zbigniew; Pawluszewicz, Ewa; Moog, ClaudeIEEE transactions on automatic control2017 / p. 3029-3033 https://doi.org/10.1109/TAC.2016.2608718

Linearization by generalized input-output injections on homogeneous time scalesCiulkin, Monika; Pawluszewicz, Ewa; Kaparin, Vadim; Kotta, Ülle2016 21st International Conference on Methods and Models in Automation and
Robotics (MMAR 2016) : Miedzyzdroje, Poland, 29 August - 1 September 20162016 / p. 48-53 https://doi.org/10.1109/MMAR.2016.7575086

Linearization by input-output injections on homogeneous time scalesCiulkin, Monika; Kaparin, Vadim; Kotta, Ülle; Pawluszewicz, EwaProceedings of the Estonian Academy of Sciences2014 / p. 387-397 https://artiklid.elnet.ee/record=b2707375*est

Motor failure tolerant control system with self diagnostics for unmanned multirotorsAmbroziak, Leszek; Simha, Ashutosh; Pawluszewicz, Ewa; Kotta, Ülle2019 24th International Conference on Methods and Models in Automation and Robotics (MMAR)2019 / p. 422–427 : ill https://doi.org/10.1109/MMAR.2019.8864726

Nabla derivatives associated with nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Mullari, Tanel; Tõnso, Maris; Pawluszewicz, Ewa; Wyrwas, MałgorzataNonlinear analysis : modelling and control2016 / p. 547-563 http://dx.doi.org/10.15388/NA.2016.4.8

On the finiteness of accessibility test for nonlinear discrete-time systemsSarafrazi, Mohammad Amin; Pawluszewicz, Ewa; Bartosiewicz, Zbigniew; Kotta, ÜlleInternational journal of control2021 / p. 2330-2336 https://doi.org/10.1080/00207179.2019.1706102 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

On the properties of forward and backward shifts of vector fieldsKaldmäe, Arvo; Kaparin, Vadim; Kotta, Ülle; Mullari, Tanel; Pawluszewicz, EwaProceedings of the Estonian Academy of Sciences2022 / p. 314-325 https://doi.org/10.3176/proc.2022.4.02 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Popov form and the explicit equations of inverse systemsBartosiewicz, Zbigniew; Kotta, Ülle; Pawluszewicz, Ewa; Tõnso, Maris; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2018 / p. 432-355 : ill http://www.kirj.ee/public/proceedings_pdf/2018/issue_4/proc-2018-4-342-355.pdf https://doi.org/10.3176/proc.2018.4.04 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

The concepts of Lie derivative for discrete-time systemsMullari, Tanel; Kotta, Ülle; Bartosiewicz, Zbigniew; Pawluszewicz, EwaProceedings of the Estonian Academy of Sciences2012 / p. 253-265 : ill

The strong Popov form of nonlinear input–output equationsBartosiewicz, Zbigniew; Pawluszewicz, Ewa; Wyrwas, Małgorzata; Kotta, Ülle; Tõnso, MarisProceedings of the Estonian Academy of Sciences2018 / p. 193–206 https://doi.org/10.3176/proc.2018.3.01 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Weak reachability and controllability of discrete-time nonlinear systems: generic approach and singular pointsMullari, Tanel; Kotta, Ülle; Bartosiewicz, Zbigniew; Sarafrazi, Mohammad Amin; Moog, Claude; Pawluszewicz, EwaInternational journal of control2020 / p. 483-489 https://doi.org/10.1080/00207179.2018.1479076 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS